buglwIP - A Lightweight TCP/IP stack - Bugs: bug #47792, Cache neighbor_index per...

 
 

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bug #47792: Cache neighbor_index per destination_cache entry

Submitter:  Simon Goldschmidt <goldsimon>
Submitted:  Wed 27 Apr 2016 10:40:57 AM UTC
   
 
Category:  IPv6 Severity:  2 - Minor
Item Group:  Feature Request Status:  Fixed
Privacy:  Public Assigned to:  goldsimon
Open/Closed:  Closed Planned Release:  None
lwIP version:  git head

Mon 03 Feb 2020 08:54:11 PM UTC, comment #1: 

Fixed as suggested

Simon Goldschmidt <goldsimon>
Group administrator
Wed 27 Apr 2016 10:40:57 AM UTC, original submission:  

The current nd6 caching mechanism uses HWADDRHINT to cache destination index per pcb, but the corresponding neighbor cache entry is cached globally.

This means when we have 2 concurrent connections, the cache-index does not work often.

By adding a 'cached_neighbor_idx' to struct nd6_destination_cache_entry, this could be improved (the u8_t of this cache would not even increase the struct's size when hiding it between 'pmtu' and 'age').

Simon Goldschmidt <goldsimon>
Group administrator

 

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2020-02-03 goldsimon StatusNone Fixed
        Assigned toNone goldsimon
        Open/ClosedOpen Closed

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